2022-01-18 23:31:51 +00:00
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#!/usr/bin/env bash
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# Setup script environment
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set -o errexit #Exit immediately if a pipeline returns a non-zero status
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set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell
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set -o nounset #Treat unset variables as an error
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set -o pipefail #Pipe will exit with last non-zero status if applicable
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shopt -s expand_aliases
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alias die='EXIT=$? LINE=$LINENO error_exit'
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2022-02-02 01:05:43 +00:00
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CROSS='\033[1;31m\xE2\x9D\x8C\033[0m'
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2022-02-02 02:46:45 +00:00
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CHECKMARK='\033[0;32m\xE2\x9C\x94\033[0m'
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RETRY_NUM=5
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RETRY_EVERY=3
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NUM=$RETRY_NUM
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2022-01-18 23:31:51 +00:00
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trap die ERR
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trap 'die "Script interrupted."' INT
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function error_exit() {
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trap - ERR
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local DEFAULT='Unknown failure occured.'
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local REASON="\e[97m${1:-$DEFAULT}\e[39m"
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local FLAG="\e[91m[ERROR:LXC] \e[93m$EXIT@$LINE"
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msg "$FLAG $REASON"
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exit $EXIT
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}
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function msg() {
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local TEXT="$1"
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echo -e "$TEXT"
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}
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msg "Setting up container OS..."
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sed -i "/$LANG/ s/\(^# \)//" /etc/locale.gen
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locale-gen >/dev/null
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2022-02-02 01:05:43 +00:00
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while [ "$(hostname -I)" = "" ]; do
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2022-02-02 02:46:45 +00:00
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1>&2 echo -e "${CROSS} \e[1;31m No Network: \e[0m $(date)"
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sleep $RETRY_EVERY
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((NUM--))
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if [ $NUM -eq 0 ]
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then
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1>&2 echo -e "${CROSS} \e[1;31m No Network After $RETRY_NUM Tries \e[0m"
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exit 1
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fi
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2022-02-02 01:05:43 +00:00
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done
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2022-02-02 02:46:45 +00:00
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echo -e "${CHECKMARK} \e[1;92m Network Connected: \e[0m $(hostname -I)"
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2022-01-18 23:31:51 +00:00
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msg "Updating container OS..."
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2022-02-03 08:00:17 +00:00
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apt-get update &>/dev/null
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2022-01-18 23:31:51 +00:00
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apt-get -qqy upgrade &>/dev/null
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# Install prerequisites
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msg "Installing prerequisites..."
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2022-01-30 10:47:27 +00:00
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apt-get update &>/dev/null
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2022-01-18 23:31:51 +00:00
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apt-get -qqy install \
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curl \
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sudo &>/dev/null
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# Customize container
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msg "Customizing container..."
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rm /etc/motd # Remove message of the day after login
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rm /etc/update-motd.d/10-uname # Remove kernel information after login
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touch ~/.hushlogin # Remove 'Last login: ' and mail notification after login
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GETTY_OVERRIDE="/etc/systemd/system/container-getty@1.service.d/override.conf"
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mkdir -p $(dirname $GETTY_OVERRIDE)
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cat << EOF > $GETTY_OVERRIDE
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[Service]
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ExecStart=
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ExecStart=-/sbin/agetty --autologin root --noclear --keep-baud tty%I 115200,38400,9600 \$TERM
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EOF
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systemctl daemon-reload
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systemctl restart $(basename $(dirname $GETTY_OVERRIDE) | sed 's/\.d//')
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# Cleanup container
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msg "Cleanup..."
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rm -rf /debian11_setup.sh /var/{cache,log}/* /var/lib/apt/lists/*
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